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PostPosted: Sat Jan 25, 2014 1:56 pm 
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Joined: Wed Nov 21, 2012 3:05 am
Posts: 199
i wonder what jason has then


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Posted: Sat Jan 25, 2014 1:56 pm 


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PostPosted: Sat Jan 25, 2014 4:44 pm 
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Joined: Mon Jan 13, 2014 7:26 am
Posts: 32
I have the clover compact, and, for the life if me, cannot get a smooth shift from 34t to 50t with di2 9070. I disassembled, assembled, and realigned rings and the derailleur . I even replaced the chain with a new one. Still, it skips shifting once in a while.
BTW, cranks are THM Cla.

Any idea on what might be wrong?


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PostPosted: Sat Jan 25, 2014 5:14 pm 
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Joined: Wed Jan 10, 2007 10:56 pm
Posts: 524
Location: Canada
I've found that the 9070 FD is very sensitive to precise adjustment with praxis rings. Ensure minimum height to teeth, perfectly parallel cage ( run your fingers along it to feel the parallel) and rock solid FD mount including properly placed and tensioned support bolt with aluminum plate. Then it should be perfect shifting as I have.

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PostPosted: Sat Jan 25, 2014 6:01 pm 
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Joined: Mon Jan 13, 2014 7:26 am
Posts: 32
FD is about a little less than 3mm above the ring. The cage is really really parallel to the ring as well. The chain length is correct (did b-b +2, and calculated as well.) I am thinking about adding 2 more links and trying again.
I have 4 other bikes, one is another 9070, and one 7970. They shift flawlessly. Praxis is the one giving me trouble... :noidea:


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PostPosted: Sat Jan 25, 2014 10:31 pm 
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Joined: Wed Jan 10, 2007 10:56 pm
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Location: Canada
Maybe a bit lower than 3 mm.
And you didn't mention the support bolt.

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PostPosted: Sun Jan 26, 2014 9:05 am 
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Joined: Mon Jan 13, 2014 7:26 am
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You are right, I didn't specifically mentioned about the support bolt. Yes, I used it to make the cage parallel to the chain-ring. I will lower the FD to 1mm and see if it helps.


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